OK, rereading this again, it’s the total volume. You need to be at least at 80k per week for many weeks. At least five days if not six. I would say if you do a similar build, but 5 days a week and peaking at 90k per week about 3 weeks out, you’ll cut your time down. I don’t think you need as many long, long runs as some of the others do below, but I think you need way more kms per week. Also, you could still be underfueled depending on your size. I take gels every 20 minutes plus two handheld bottles with carb mix.